Formatting cells background and bold in google sheet (php) - php

Question

I'm trying to change the background color and the bold value of a couple of cells in my spreadsheet. I know I have a working service because I'm doing a spreadsheets_values update right before and it works.
Changing values works so I'm guessing it must be something with my config. I dont get any errors, the $result variable remains empty. Any ideas would be appreciated, thanks.
// known to work from changing the values
$client = getClient();
$service = new Google_Service_Sheets($client);
$spreadsheetId = 'MY SPREADSHEET ID';
// new code
$r = $g = $b = 0.5;
$a = 1;
$myRange = [
//'sheetId' => 0, // can be omitted because I'm working on the first sheet
'startRowIndex' => 5,
'endRowIndex' => 10,
//'startColumnIndex' => 0, // can be omitted because default is 0
'endColumnIndex' => 5,
];
$format = [
'backgroundColor' => [
'red' => $r,
'green' => $g,
'blue' => $b,
'alpha' => $a,
],
'textFormat' => [
'bold' => true
]
];
$requests = [
new Google_Service_Sheets_Request([
'repeatCell' => [
'fields' => 'userEnteredFormat.backgroundColor, userEnteredFormat.textFormat.bold',
'range' => $myRange,
'cell' => [
'userEnteredFormat' => $format,
],
],
])
];
$batchUpdateRequest = new Google_Service_Sheets_BatchUpdateSpreadsheetRequest([
'requests' => $requests
]);
$result = $service->spreadsheets->batchUpdate($spreadsheetId, $batchUpdateRequest);

Answer 1

SOLUTION:
I made 2 mistakes here:
1) i thought error reporting was on, but it was not. #greybeard got me looking for that and after that I got the following error (this might help others):
Uncaught Google_Service_Exception: { "error": { "code": 400, "message": "Invalid requests[0].repeatCell: No grid with id: 1"
2) as you can see in the error above my grid id is rejected. this is due to the fact that I confused sheetId with sheet index. google sheets actually have a "real" id that you can get by the following request
$sheetId = $service->spreadsheets->get($spreadsheetId);
This returns an array with an object which holds the sheetIds. For the sheet with index 0 this would be
$sheetId = $sheetId->sheets[0]->properties->sheetId;
To directly access only a certain sheet and not the whole spreadsheet you can add the 'ranges' property
$sheetId = $service->spreadsheets->get($spreadsheetId, ['ranges' => 'NAME_OF_SHEET']);
so the full script would be:
$client = getClient(); // this calls my custom function that does the authentication
$service = new Google_Service_Sheets($client);
$spreadsheetId = 'MY SPREADSHEET ID';
// get sheetId of sheet with index 0
$sheetId = $service->spreadsheets->get($spreadsheetId);
$sheetId = $sheetId->sheets[0]->properties->sheetId;
// set colour to a medium gray
$r = $g = $b = 0.5;
$a = 1;
// define range
$myRange = [
'sheetId' => $sheetId, // IMPORTANT: sheetId IS NOT the sheets index but its actual ID
'startRowIndex' => 5,
'endRowIndex' => 10,
//'startColumnIndex' => 0, // can be omitted because default is 0
'endColumnIndex' => 5,
];
// define the formatting, change background colour and bold text
$format = [
'backgroundColor' => [
'red' => $r,
'green' => $g,
'blue' => $b,
'alpha' => $a,
],
'textFormat' => [
'bold' => true
]
];
// build request
$requests = [
new Google_Service_Sheets_Request([
'repeatCell' => [
'fields' => 'userEnteredFormat.backgroundColor, userEnteredFormat.textFormat.bold',
'range' => $myRange,
'cell' => [
'userEnteredFormat' => $format,
],
],
])
];
// add request to batchUpdate
$batchUpdateRequest = new Google_Service_Sheets_BatchUpdateSpreadsheetRequest([
'requests' => $requests
]);
// run batchUpdate
$result = $service->spreadsheets->batchUpdate($spreadsheetId, $batchUpdateRequest);